Air inflow apparatus for ship

Abstract

An external air intake device for a ship is provided by one embodiment of the present invention. An external air intake device for a ship according to one embodiment of the present invention may include a housing having two sides that are each open to form an intake port and an exhaust port, and a flow space formed between the intake port and the exhaust port through which external air passes; a plurality of louver blades installed side by side across the flow space in a horizontal direction, each having an air flow path formed inside and an air injection port formed on one side that communicates with the air flow path; and an air circulation unit connected to the louver blades to supply circulating air to the air flow path.

Description

Technology Field

[0001] The present invention relates to an external air intake device for a ship, and more specifically, to an external air intake device for a ship capable of supplying heated air to an engine room or accommodation area, preventing moisture contained in the air from condensing on the surface of the louver blade, and ensuring that external air is supplied smoothly even if the louver blade is damaged. Background Technology

[0002] Generally, ships are equipped with vents and ventilation openings to provide outside air to the engine room where combustion engines are installed or to the living quarters where crew members reside. Multiple louver blades are installed inside the frame forming the perimeter of these vents and ventilation openings to block the ingress of rainwater or seawater. The louver blades are formed from long, thin plates and are attached to the frame in a horizontal, vertical, or grid pattern to perform ventilation while preventing the ingress of direct sunlight, rainwater, or seawater.

[0003] Meanwhile, when a ship operates in polar regions, cryogenic outside air is introduced into the engine room or accommodation area through vents and openings. In particular, when cryogenic outside air is introduced, moisture contained in the outside air condenses on the blade surface, obstructing airflow and preventing proper fuel combustion in the combustion engine. Therefore, conventionally, electric heat tracing was installed on the louver blades to supply heated outside air to the engine room or accommodation area. However, even with the installation of heating tracing on the louver blades, there were limitations in sufficiently heating the outside air to the temperature required by the combustion engine within a short period. Consequently, instead of installing heating tracing, a structure was applied that supplies heated outside air to the combustion engine by circulating thermal oil inside the louver blades. However, the structure of circulating thermal oil inside the louver blades has a problem in that if the louver blades are damaged, the thermal oil leaks out and mixes with the outside air, resulting in the inability to supply outside air.

[0004] Accordingly, there was a need for a ship's outside air intake device with a structure capable of supplying heated air to the engine room or living quarters, preventing moisture contained in the air from condensing on the surface of the louver blades, and ensuring a smooth supply of outside air even if the louver blades are damaged. Prior art literature

[0005] Republic of Korea Published Patent No. 10-2010-0111726 (October 15, 2010) The problem to be solved

[0006] The technical problem that the present invention aims to solve is to provide an external air intake device for a ship that can supply heated air to the engine room or living quarters and prevent moisture contained in the air from condensing on the surface of the louver blades.

[0007] The technical problems of the present invention are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0008] An external air intake device for a ship according to an embodiment of the present invention for achieving the above technical objective comprises: a housing having two sides each open to form an intake port and an exhaust port, and a flow space formed between the intake port and the exhaust port through which external air passes; a plurality of louver blades installed side by side across the interior of the flow space in a horizontal direction, each having an air flow path formed inside and an air injection port formed on one side that communicates with the air flow path; and an air circulation unit connected to the louver blades to supply circulating air to the air flow path.

[0009] The above air circulation unit can supply at least one of the indoor air in contact with the exhaust port and the outdoor air in contact with the exhaust port as the circulation air.

[0010] The above air injection port is opened toward the above intake port so that the injected circulating air can move backward along the surface of the louver blade.

[0011] The above-mentioned louver blade may include a first blade exposed to the intake port and in direct contact with the outside air, and a second blade coupled with a gap between the first blade and the air injection port. Effects of the invention

[0012] According to the present invention, since some indoor air is drawn in and heated and flows along the surface of the louver blade together with the outside air, heated air can be supplied to the engine room or living quarters. In particular, since the heated indoor air is introduced into the inner side of the louver blade and then discharged to the outer side of the louver blade to mix with the outside air, it is possible to prevent moisture contained in the outside air from condensing on the surface of the louver blade while minimizing heat loss, and accordingly, it is possible to prevent the airflow from being obstructed by condensed ice.

[0013] In addition, since air is filled inside the louver blades, even if the louver blades are damaged, heat oil and other substances do not leak out, allowing for a smooth supply of outside air. Brief explanation of the drawing

[0014] FIG. 1 is a perspective view illustrating an external air intake device of a ship according to one embodiment of the present invention. FIG. 2 is a perspective view showing the external air intake device of FIG. 1 cut and disassembled. Figure 3 is a cross-sectional view taken by cutting along line AA of Figure 1. Figures 4 and 5 are operational diagrams to explain the operation of the external air intake device of a ship. FIG. 6 is an operational diagram illustrating the operation of an external air intake device of a ship according to another embodiment of the present invention. Specific details for implementing the invention

[0015] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0016] Hereinafter, with reference to FIGS. 1 to 5, an external air intake device for a ship according to an embodiment of the present invention will be described in detail.

[0017] FIG. 1 is a perspective view illustrating an external air intake device of a ship according to one embodiment of the present invention.

[0018] The external air intake device (1) of a ship according to an embodiment of the present invention is for supplying, ventilating, and circulating external air, and can be installed, for example, by penetrating the wall of the ship's engine room or living quarters.

[0019] The ship's external air intake device (1) can supply heated air to the engine room or accommodation area by partially inhaling and heating indoor air and allowing it to flow along with the outside air on the surface of the louver blade (see 20 in FIG. 3). In particular, since the heated indoor air is introduced into the inside of the louver blade (20) and then discharged to the outside of the louver blade (20) to mix with the outside air, it is possible to prevent moisture contained in the outside air from condensing on the surface of the louver blade (20) while minimizing heat loss, and accordingly, it is possible to prevent the airflow from being obstructed by condensed ice. In addition, since air is filled inside the louver blade (20), even if the louver blade (20) is damaged, heat oil and the like do not leak out, so the outside air can be supplied smoothly.

[0020] Hereinafter, with reference to FIGS. 2 and FIGS. 3, the external air intake device (1) of the ship will be described in detail.

[0021] FIG. 2 is a perspective view showing the external air intake device of FIG. 1 cut and disassembled, and FIG. 3 is a cross-sectional view showing the device cut along line AA of FIG. 1.

[0022] The external air intake device (1) of a ship according to the present invention includes a housing (10), a louver blade (20), and an air circulation unit (30).

[0023] The housing (10) is a tubular member with both sides open to form an intake port (11) and an exhaust port (12), and can be installed by penetrating the wall of an engine room or living quarters. The housing (10) can be fixed to the wall in various ways, such as by screw connection, welding connection, or concave-convex connection, and a flow space (10a) is formed between the intake port (11) and the exhaust port (12), so that outside air introduced into the intake port (11) can pass through the flow space (10a) and flow out through the exhaust port (12). A louver blade (20) is attached to the housing (10).

[0024] A plurality of louver blades (20) guide the flow of outside air and are installed side by side across the interior of the flow space (10a) in a horizontal direction. The plurality of louver blades (20) are arranged side by side in the flow space (10a) at a certain distance apart in a vertical direction, and each may be formed with an air flow path (20a) formed inside and an air injection port (20b) formed through one side that communicates with the air flow path (20a). That is, the air inside the air flow path (20a) is discharged to the outside through the air injection port (20b). The air injection port (20b) may be formed in the shape of a hole or slit of various shapes, and at least one may be formed on one side of the louver blade (20). Although the drawing shows that six louver blades (20) are installed in the flow space (10a), this is not limited thereto, and the number of louver blades (20) installed can be increased or decreased in accordance with the size of the housing (10) and the flow space (10a). The structure of the louver blades (20) will be described in more detail later. An air circulation unit (30) is connected to the louver blades (20).

[0025] The air circulation unit (30) supplies circulating air to an air flow path (20a) formed inside a louver blade (20), and may be formed integrally or independently on one side of the housing (10). The air circulation unit (30) may supply at least one of indoor air from an indoor space, for example, an engine room or a residential area, and outdoor air from an outdoor space to the air flow path (20a) as circulating air, and the aforementioned air injection port (20b) may be opened toward the intake port (11). Below, the structure in which the air circulation unit (30) supplies indoor air as circulating air will be explained in greater detail. The air circulation unit (30) supplies indoor air as circulating air to the air flow path (20a), and the air injection port (20b) is opened toward the intake port (11), so that the circulating air, which is indoor air that is relatively warmer than the outside air, flows into the air flow path (20a) and is then injected toward the intake port (11) through the air injection port (20b) and can move backward along the surface of the louver blade (20) together with the outside air, thereby supplying air that is warmer than the outside air to the engine room or living quarters. In addition, as the warm air flows, moisture contained in the outside air can be prevented from condensing on the surface of the louver blade (20), thereby preventing the airflow from being obstructed by condensed ice, and allowing the outside air to be supplied smoothly regardless of damage to the louver blade (20). More specifically, the air circulation unit (30) may include a heater section (31) and a blower section (32). The heater unit (31) heats the circulating air to a temperature above a certain level and may be a conventional air-cooled heat exchanger. By heating the circulating air with the heater unit (31), warmer air can be supplied to the engine room or living quarters, and condensation on the surface of the louver blade (20) can be prevented more effectively. The heating temperature of the circulating air can be controlled by a separate control unit (not shown) of the heater unit (31).For example, if the outside air temperature detected by the control unit is an ultra-low temperature below the reference temperature, the control unit may control the heater unit (31) to heat the circulating air to a higher temperature. However, the heater unit (31) is not limited to being formed as an air-cooled heat exchanger, and the shape of the heater unit (31) can be varied in various ways. The circulating air heated by the heater unit (31) is forcibly blown into the air flow path (20a) by the blower unit (32), and the blower unit (32) may be a conventional fan that sucks in air. The blower unit (32) is installed so as to be exposed to the outside on one side of the housing (10) so as to suck in indoor air and simultaneously forcibly blow it into the air flow path (20a). Although the blower unit (32) is shown in the drawing as being formed on the side of the housing (10), it is not limited thereto, and the arrangement of the blower unit (32) can be varied in various ways.

[0026] Meanwhile, the aforementioned rubber blade (20) includes a first blade (21) and a second blade (22).

[0027] The first blade (21) is exposed to the intake port (11) and comes into direct contact with the outside air, and the second blade (22) is connected with a gap between the first blade (21) and the air injection port (20b). In other words, the first blade (21) is positioned adjacent to the intake port (11), and the second blade (22) is positioned behind the first blade (21) but is connected with a gap from the first blade (21) so that the air injection port (20b) is not closed. At this time, the second blade (22) may be formed integrally with the first blade (21) or may be formed separately. As the second blade (22) is joined with a gap between the first blade (21) and the air nozzle (20b), warm circulating air sprayed from the air nozzle (20b) can be discharged between the first blade (21) and the second blade (22) and easily join with the outside air. The circulating air serves to heat the rear surface of the first blade (21) that is in contact with the air nozzle (20b), thereby preventing moisture from condensing on the front surface of the first blade (21). The second blade (22) is heated by the circulating air filled in the air flow path (20a), thereby preventing moisture condensation on its surface. Below, the structure in which the first blade (21) and the second blade (22) are separated from each other will be explained in greater detail. The shapes of the first blade (21) and the second blade (22) are not limited, but for example, the first blade (21) may be formed in a '<' shape by having its upper and lower surfaces inclined upward and downward, respectively, from the intake port (11) toward the exhaust port (12). Additionally, the second blade (22) may include an expanded inclined surface (22a) in which the upper and lower surfaces are opened upward and downward, respectively, from the intake port (11) toward the exhaust port (12), and a contracting inclined surface (22b) extending from the expanded inclined surface (22a) and having its end portions in contact with each other. As the second blade (22) includes the expanded inclined surface (22a) and the contracting inclined surface (22b), the outside air and circulating air flow gently along the inclined surface, thereby reducing flow noise.However, the first blade (21) is not limited to being formed in a '<' shape, for example, the first blade (21) may be formed in a '(' shape. Additionally, the second blade (22) is not limited to including an expanding slope surface (22a) and a contracting slope surface (22b), for example, the second blade (22) may be formed in a streamlined shape, with the upper surface forming an upwardly convex curve and the lower surface forming a downwardly convex curve.

[0028] Hereinafter, with reference to FIGS. 4 and FIGS. 5, the operation of the external air intake device (1) of the ship will be explained in more detail.

[0029] Figures 4 and 5 are operational diagrams to explain the operation of the external air intake device of a ship.

[0030] The external air intake device (1) of a ship according to the present invention can supply heated air to the engine room or accommodation area by partially inhaling and heating indoor air and allowing it to flow along the surface of the louver blade (20) together with the external air. In particular, since the heated indoor air is introduced into the inside of the louver blade (20) and then discharged to the outside of the louver blade (20) to mix with the external air, it is possible to prevent moisture contained in the external air from condensing on the surface of the louver blade (20) while minimizing heat loss, and thereby prevent the airflow from being obstructed by condensed ice. In addition, since air is filled into the inside of the louver blade (20), even if the louver blade is damaged, heat oil and the like do not leak out, allowing the external air to be supplied smoothly.

[0031] First, referring to FIG. 4, when the external air intake device (1) of the ship is operated, the heater unit (31) and the blower unit (32) operate. The blower unit (32) sucks in indoor air from the engine room or accommodation area that is in contact with the exhaust port (12), and the heater unit (31) heats the sucked indoor air to a temperature above a certain level. The indoor air heated by the heater unit (31) is forcibly blown into the air flow path (20a) as circulating air, and as shown in FIG. 5, is sprayed toward the intake port (11) through the air injection port (20b) which is connected to the air flow path (20a). As the heated indoor air is blown into the air flow path (20a), the second blade (22) is heated, and moisture can be prevented from condensing on the surface of the second blade (22). The circulating air injected through the air nozzle (20b) is discharged between the first blade (21) and the second blade (22) and joins with the outside air. At this time, the rear surface of the first blade (21) is heated, which prevents moisture from condensing on the front surface of the first blade (21). The circulating air joined with the outside air can move backward along the surface of the second blade (22), thereby supplying air warmer than the outside air to the engine room or living quarters.

[0032] Hereinafter, with reference to FIG. 6, an external air intake device (1) of a ship according to another embodiment of the present invention will be described in detail.

[0033] FIG. 6 is an operational diagram illustrating the operation of an external air intake device of a ship according to another embodiment of the present invention.

[0034] An external air intake device (1) of a ship according to another embodiment of the present invention further includes a droplet separator (23) coupled to the upper end of a first blade (21). An external air intake device (1) of a ship according to another embodiment of the present invention is substantially the same as the previously described embodiment except that it further includes a droplet separator (23) coupled to the upper end of a first blade (21). Therefore, this is described in detail, and unless otherwise noted, the description of the remaining components is replaced by the previously described details.

[0035] In another embodiment of the present invention, an external air intake device (1) of a ship has a droplet separator (23) attached to the upper end of a first blade (21). The droplet separator (23) is intended to condense water particles contained in the external air and can be attached to the upper end of the first blade (21), which is positioned at an upward inclination from the intake port (11) toward the exhaust port (12). For example, the droplet separator (23) can be attached at an upward inclination toward the intake port (22) from the upper end of the first blade (21) as illustrated, and, if necessary, can be formed integrally with the first blade (21). By combining a droplet separator plate (23) on the top of the first blade (21), water particles contained in the outside air can collide with the droplet separator plate (23) and be partially or completely removed from the outside air, and as a result, the outside air from which water has been removed can move backward along the surface of the second blade (22) together with the circulating air, so that water condensation on the surface of the second blade (22) can be effectively prevented.

[0036] Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art will understand that the present invention may be implemented in other specific forms without changing its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. Explanation of the symbols

[0037] 1: Ship's external air intake device 10: Housing 10a: Fluid space 11: Air intake 12: Exhaust 20: Louver blade 20a: Air flow path 20b: Air nozzle 21: First blade 22: Second blade 22a: Expanded inclined surface 22b: Converging slope 23: Droplet separator 30: Air circulation unit 31: Heater unit 32: Blower unit

Claims

Claim 1 A housing having two sides each open to form an intake port and an exhaust port, and a flow space formed between the intake port and the exhaust port through which outside air passes; a plurality of louver blades installed side by side across the interior of the flow space in a horizontal direction, each having an air flow path formed inside and an air injection port formed on one side in communication with the air flow path; and an air circulation unit connected to the louver blades to supply circulating air to the air flow path, wherein the air injection port is opened toward the intake port and the circulating air injected moves rearward along the surface of the louver blade. Claim 2 In claim 1, the air circulation unit is an external air intake device of a ship that supplies at least one of the indoor air in contact with the exhaust port and the outdoor air in contact with the exhaust port as the circulation air. Claim 3 delete Claim 4 An external air intake device for a ship according to claim 1, wherein the louver blade comprises a first blade exposed to the intake port and in direct contact with the outside air, and a second blade coupled with a gap between the first blade and the air injection port.

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